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In an endovascular electrolytically detachable wire and tip for the formation of thrombus in arteries, veins, aneurysms, vascular malformations and arteriovenous fistulas

  • US 5,354,295 A
  • Filed: 02/24/1992
  • Issued: 10/11/1994
  • Est. Priority Date: 03/13/1990
  • Status: Expired due to Term
First Claim
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1. A method for forming an occlusion within a vascular cavity having blood disposed therein comprising the steps of:

  • endovascularly disposing a relaxed coil wire near an endovascular opening into said vascular cavity, said relaxed coil wire having no substantial memory of its predisposed shape other than at most a relaxed, simple helical shape;

    disposing a distal tip of said wire into said vascular cavity to substantially space fill said cavity to mechanically form said occlusion within said vascular cavity about said distal tip; and

    nonthermally detaching said distal tip from said wire to leave said distal tip within said vascular cavity, wherein nonthermal detachment is defined as a detachment without substantially increasing the temperature of said distal tip and wire,whereby said vascular cavity is occluded by said distal tip, and any thrombus formed by use of said tip.

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